Phylogentic tree analysis suggests that the sequence shared 99.5% and 97.3% nt hemologue indentities with BLS V-SD1995 and that of Australia strain respectively.

• 证实南京地区已存在BLSV阳性鸡群，375bp的病毒基因的序列分析表明，分离株BLSV-NJ2002与本实验室保存的BLSV-SD1995毒株的核苷酸同源性为99.；5%25，与澳大利亚报道的BLSV的核苷酸同源性为97